I keep getting the pressure change in the brake relay valves causing the brakes to stick on after a while which needs to be reset, I have located the vac release valve on some EE locomotives but I can't locate any of the air release or the vac release on several Sulzer engined locos. I am aware the braking equipment and release valves on a 47 are in the boiler compartment or opposite end to the cooling system, however this is not accessible. Is there a key combination to trigger the release valves?
